Banchoff, Tom
Brown University. Geometry, visualisation; Popularisation.

Bestvina, Mladen
Geometric group theory. Includes a problem list.

Calegari, Danny
Specializes in topology and classical geometry. Department of mathematics. California Institute of Technology.

Chang, Sun-Yung Alice
Director of Graduate Studies, Department of Mathematics, Princeton University. Subjects: geometric analysis, algebraic geometry, differential geometry.

Dodson, C.T.J. (Kit)
UMIST, Manchester. Differential geometry, stochastic geometry and applications.

Doran, Charles
Columbia University. Geometry, mathematical physics, number theory.

Dunfield, Nathan
Harvard University. 3-dimensional topology, geometry, and related topics.

Große-Brauckmann, Karsten
Differential geometry, especially surfaces of constant mean curvature.

Kapovich, Michael
University of Utah. Low-dimensional geometry and topology.

Palais, Richard
Differential geometry, mathematical visualisation.

Hang, Fengbo
Veblen Research Instructor, Department of Mathematics, Princeton University. Subjects: geometric analysis, nonlinear partial differential equations, geometric measure theory.

Cherowitzo, Bill
Finite geometry. Department of Mathematics. University of Colorado at Denver.

Keith, Sandra Zaroodny
St. Cloud State University MN. Interests in visualisation and education.

Kimberling, Clark
Triangle centers, integer sequences, mathematical history and biography.

Sullivan, John M.
Optimal geometries.

Rollin, Yann
Low-dimensional geometry.

Hales, Thomas C.
University of Pittsburgh. Kepler conjecture (announced a computer-aided proof), other space tiling conjectures, Langlands theory.

Sormani, Christina
Lehman College and CUNY Graduate Center. Riemannian reometry: manifolds with Ricci curvature bounds, their Gromov-Hausdorff limits and metric spaces.

Anderson, Jim
University of Southampton. Hyperbolic geometry, mostly in dimensions 2 and 3, and its connections to other areas, such as the geometry and topology of 3-manifolds and Riemann surfaces. Preprints and teaching material.

Glazebrook, James F.
Eastern Illinois University and University of Illinois at Urbana-Champaign. Differential Geometry and its Applications to Mathematical Physics; Index Theory and Foliations; Holomorphic Vector Bundles; Noncommutative Geometry. Books, articles and preprints.

Ballmann, Werner
Rheinische Friedrich-Wilhelms-Universität Bonn. Differential geometry; geometric topology.

DeLaVina, Ermelinda
University of Houston Downtown. Computational geometry - Graffiti. Publications and software.